Apparatus



(No Model.)

3 Sheets-Sheet l. S. DOBBS. I

HEATING APPARATUS. 4 No. 314,320. Patented Mar. 24. 1885.

v R1 N.) m i I. s M u R x w l I u' l F- M I f \v R w I fliiiegri, I v Q m In 2/2 7250 7 W W, WWWQ, 7

(No Model.) 3 Sheets-Sheet 2.

s@ DOBBS. HEATING APPARATUS.

No. 314,320. Patented Mar. 24, 1885.-

N. FETRRS. Plwlm wgmphur. \VA n. c.

(No Model.) S DOBBS 3 SheetsSheet 3.

HEATING APPARATUS. No. 314,320. 4 Patented Mar. 24, 1885.

M42 7 we/ U ,"a fw a, 9%

' double door opposite the fire-chamber.

UNITE STATES SENECA DOBBS, OF ROCHESTER, NEW YORK.

H EATING APPARATUS.

SPEQEEICATIQN forming part of Letters Patent No. 314,320, dated March 24, 1885.

Application filed February 19, 1853.

To aZZ whom it may concern.-

Be it known that I, SENECA DOBBS, of Rochester, Monroe county, New York, have invented a certain new and useful Improvement in Heating Apparatus; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawings, in which Figure 1 is acentral vertical section through ahot-airfurnace, showing my invention. Fig. 2 is a similar view at right angles to Fig. 1. Fig. 3 is a top view on an enlarged scale, and with the exterior casing in cross-section. Fig. 4 is a cross-section in line a: w of Fig. 1, also enlarged. Fig. 5 is a cross-section in line 3/ y of Fig. 1. Fig. 6 is a front elevation of the Fig. 7 is a side elevation of the fire-pot. Fig. 8 is a perspective view of two of the air trunks or conduits fitted together. Fig. 9 is an edge elevation of the same parts.

My improvement relates to apparatus for heating by hot air or steam, and is designed to present a greater amount of radiating-surface in a cheap form than is ordinarily presented in hot-air furnaces, stoves, and steam apparatus now in use.

The drawings show my invention adapted to allot-air furnace, although it is also adapted to stoves and steam-heaters.

A indicates the shell of the furnace; B, the exterior casing; O, the fire-pot, D, the grate, and E a magazine which extends from over the fire-pot outward in an angular direction through the shell and casing, and has aspout outside covered by a door, a.

The shell of the furnace, also the exterior casing, may be made of any desired form square, round, rectangular, or otherwise.

The cold air is fed into the jacketspace between the furnace and easing by a pipe, I), at the bottom, which leads to the outside air.

At the top andbottom of the fire-pot are two horizontal plates, 0 (2, allowing the air in the jacket-space also to fiow in through the space between said plates and surround the body of the fire-pot by which it receives additional heat.

F F are a series of air trunks or conduits, resting vertically in the space of the furnace (No model.)

above the fire-pot. They are hollow, open at the top, and have legs ff, which open down through the upper plate, 0, around the firepot, thereby receiving the air from the space below, and allowing it to pass through the hollow trunks and escape at the top, where it unites with the volume of air which passes up the jacket-space between the furnace and casing. The legs f f, where they pass through the plate 0, rest in bearings or enlargements cast on the plate, and are puttied or cemented in place to make the joint gastight.

The air trunks or conduits may be made of the rectangular form shown or of any other form desired. At the bottom they are arched between the legs, leaving firespace above the firepot; but those of the air-trunks which come opposite the magazine are beveled off, as shown in Fig. 1, to give room for the magazine to enter. Spaces are left between the trunks sufficient for the passage of the heat and the products of combustion upward, and spacesare also left between the edges of the trunks and the sides of the furnace for the same purpose, so that the air-trunks on all sides are surrounded by intense heat, and the air which passes up through the trunks is in such thin layers that the maximum heating action is obtained from the great amount of radiating-surface exposed.

At the top of each air-trunk is a horizontal flange, y, projecting on opposite sides. In these flanges, near the ends, are made notches h 71. WVhen the flanges of two trunks are fitted edge to edge, as shown in Fig. 8, the central portions are closed, cutting off the draft between the trunks; but the notches h h, fit ted together form ports through which the draft can escape upward. The edges of the flanges which meet are halved out, as shown at it, Figs. 8 and 9, and are puttied or cemented together to make them gas-tight.

G G are two fines, fitted one on each side over all the ports h h, and receiving the draft therefrom. The two fiues are connected by a central'cross-fiue, G, and a single exit-pipe, H, extends from this cross-flue. In the plan view, Fig. 3, portions of the fines are broken away to show the ports for conveying the draft, and the openings in the top of the trunks for the passage of the hot air. By slight modifications, obvious to any person skilled in the art, the action might be reversed, the hot air tion and fitting of the air-trunks enables them being made to pass up between the trunks and exterior to thesame, and the draft being made to pass up through the interior of the hollow trunks. Steam or water may be heated in the same way and by the same means that the air is heated. The hot air is taken off from the dome at the top by hot air pipes JJ, in the usual way.

I is a large door in the casing and in the furnace wall in front of the tire chamber, through which the fire-pot is inserted and removed.

The fire-pot O has a circular flange, 7i, projecting from its periphery at the top, and it also has an inclined plate or chute, Z, in front, with two laterally-projectinglugs, in m, atthe outer edge,,Figs. 5 and 7. An opening is made in the plate 0. in which the plate 6 fits when in place, the lugs mm in that case pro 'n verant resin on o) 'the )2, c. ecti o l t g t, ot lite and supporting the plate 1. The circular flange also projects over and rests upon the circular seat formed in the plate 0 to receive it. The tire-pot thus fitted is loose, and can be drawn out or put in at pleasure. The door I is of such size and i Oi'ilitiS to allow this to be done. To remove the fire-pot, it is only necessary to open the door in the casing and furnace-walls and draw it out. By this means the fire pot can be taken out for repairs or to replace it by another. and by this means there is no necessity of taking the casing off and tearing the walls apart.

The air-trunks are also easily removed from the interior of the furnace. To do this the exterior casing is removed. A door or plate, it, covers a large opening in one side of the furnace-walls, opposite the broad side of the air-trunks, as shown in Figs. 2 and 4. By slightly raising the air-trunks one at a time, and inclining them outward through the open ing when the door or plate is removed from place, the air-trunks can be readily removed. This opening and door in the side of the furnace are ofimportance, to enable the air-trunks to be removed in low cellars and other places where the air-trunks cannot be raised high enough to remove them from the furnace without striking the ceiling. The loose connec to be separated and removed one by one without difficulty, and obviates the great trouble that occurs in separating the parts of ordinary furnaces.

p is another door or plate, covering a similar opening on another side of the furnace, but opposite the edges of the air-tubes. By removing this door or plate the edges of the air-tubes are exposed, and a broom, brush, or other instrument may be inserted between the air-trunks for the purpose of clearing them from ashes and soot.

Having thus described my invention I claim-- 7 1. In a heating apparatus, the hollow air trunks or conduits F F, constructed with legs ff at their bottom, which form an 21,1011 over the fire-chamber, and with horizontally-projecting flanges g g at the top, halved together, and provided with notches h h, the whole so arranged, as described, that the flanges form a continuous covering to the tops of the airtrunks, to prevent passage of the draft except through the notches h Ii, as herein shown and described. 7 V

2. In a heatingapparatus, the combination, with a series ot'hollow air-trunks, F F, having flanges g g at the top, which match together and form a continuous covering to the airtrunks, of side fines, G G, covering ports h h in the 'fianges, that allow the passage of the draft, a cross-flue, G, which connects the two side fines, and an exit-pipe, H, leading from the cross-fine, as shown and described, and for the pupose specified.

3. In a heating apparatus, the fire-pot O, constructed with the circular rim is, projecting plate Z, and side lugs, m in, fitting removably in an opening in the fixed plate 0, and capable of being inserted and removed through a door in the casing of the furnace, as herein shown and described.

In witness whereof I have hereunto signed my name in the presence of two subscribing witnesses.

SENECA DOBBS.

Vitnesses:

R. F. Osoooi), Z. L. DAVIS. 

